| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] at [art] high level | 11 |
|
| 2 | [vb -s] at a high level | 9 |
|
| 3 | [vb -s] at a high level | 9 |
|
| 4 | [vb -s] at [art] higher level | 5 |
|
